Summary: The Fisher-Price® Rock-a-Stack® toy offers classic stacking fun for your baby. Younger babies will love grasping holding shaking and exploring the five colorful rings. The littlest ring has a shiny reflective surface for baby to discover inside—with colorful swirling beads that make fun rattle sounds! When they're ready to sit and play babies can stack the rings on the post then bat at the wobbly base to make it rock back and forth. Stacking helps them develop hand-eye coordination and introduces them to the concept of relative size as they learn to sort and stack from biggest to smallest! Features: ?Classic stacking toy with 5 colorful rings to grasp shake and stack ?Top ring has shiny surface with rattle beads inside Roly-poly rocker base for wibbly-wobbly bat-at play ?Helps develop fine motor skills and gross motor skills as baby grasps shakes and stacks the rings Great gift for babi